Good article. I often go for a walk on clear nights when the moon is more than a sliver, walking the same paths around the property that I follow during the day. I have a 1 LED red key ring/map light that is more than enough for those sections that are pitch black.
And these woods are teeming with life at night, so I suspect (although I have had no way to test it) that a human under a mylar blanket would have no more of a heat sig than any of dozens of deer, possums, coyotes, etc., in the area.
I’d like to see some testing done of various “field expedient” anti IR methods. One thing I know is the govt doesn’t want to peasants to know what would work.